Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
1847353Factored
FactorDigitsBitsDate
767395944853562065769538892686.02018-02-04 03:37:57
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joseph Charrier725EC396D94021CE0
Verified (Factored)1998-12-27Dr. Daniel J. Weidman725EC396D94021CE1732822
Verified (Factored)2015-07-16MadPoo725EC396D94021CE39320
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-02-04ATHA1C5357EFCDFE07F1109209453
Verified2018-02-05treborA1C5357EFCDFE07F174950253
P-1 factors
DateFactorB1B2
2018-02-0476739594485356206576953889184735324883200
History
DateUserTypeResult
2018-02-05treborC-PRP
M1847353/76739594485356206576953889 : A1C5357EFCDFE07F
PRP: Verified
PRP without proof (not generated)
2018-02-04ATHC-PRP
M1847353/76739594485356206576953889 : A1C5357EFCDFE07F
PRP: Verified
PRP without proof (not generated)
2018-02-04JossF-PM1
Factor: 76739594485356206576953889 / (P-1, B1=1847353, B2=24883200, E=12)
2017-10-20TJAOINF
no factor from 2^66 to 2^67
2017-02-11JossNF-PM1
B1=1244160, B2=12441600, E=12
2017-01-11JossNF-PM1
B1=1036800
2016-10-29JossNF-PM1
B1=864000
2016-10-27JossNF-PM1
B1=720000
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-06Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-09-08ramgeisNF
no factor from 2^65 to 2^66
2015-07-16MadPooC-LL
725EC396D94021CE
2015-04-28snme2pm1NF
no factor from 2^64 to 2^65
2015-04-28snme2pm1NF
no factor from 2^63 to 2^64
2012-01-01markrNF-PM1
B1=275000, B2=6000000, E=12
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-09Architects CubedNF
no factor from 2^60 to 2^61